<template>
  <div>
    <el-form ref="uploadRef1" :model="uploadImg" label-width="150px" v-if="uploadImg.length>0">
      <template v-for="(item,index) in uploadImg" :key="item">
        <el-form-item label="图片" :prop="`aiPictureId${index}`">
          <div class="image">
            <img :src="item.url" alt="" class="img" @click="handlePictureCardPreview(item)" />
            <svg-icon class-name="del-icon" icon-class="del" @click="handleRemove(item)" />
          </div>
        </el-form-item>
        <el-form-item label="标题" :prop="index+'.aiPictureTitle'" :rules="rules.aiPictureTitle">
          <el-input v-model="item.aiPictureTitle" placeholder="请输入标题" />
        </el-form-item>
        <el-form-item label="描述" :prop="index+'.aiPictureDescription'">
          <el-input v-model="item.aiPictureDescription" type="textarea" maxlength="300" show-word-limit
            :autosize="{ minRows: 3, maxRows: 5}" placeholder="请输入描述" />
        </el-form-item>
      </template>
    </el-form>

    <el-upload multiple :action="uploadImgUrl" :on-change="handleChange" :on-success="handleUploadSuccess"
      :before-upload="handleBeforeUpload" :limit="limit" :on-error="handleUploadError" :on-exceed="handleExceed"
      name="file" ref="imagesUpload" :on-remove="handleRemove" :headers="headers" :file-list="fileList"
      :show-file-list="false" :on-preview="handlePictureCardPreview" :class="{ hide: fileList.length >= limit }"
      :disabled="disabled" style="margin-left:150px">
      <el-button type="primary">
        <svg-icon class-name="upload-icon" icon-class="upload" style="margin-right:10px" />添加图片
      </el-button>
    </el-upload>
    <!-- 上传提示 -->
    <div class="el-upload__tip" v-if="showTip" style="margin-left: 150px">
      请上传
      <template v-if="fileSize">
        大小不超过 <b style="color: #f56c6c">{{ fileSize }}MB</b>
      </template>
      <template v-if="fileType">
        格式为 <b style="color: #f56c6c">{{ fileType.join("/") }}</b>
      </template>
      的文件
    </div>

    <el-dialog v-model="dialogVisible" title="预览" width="800px" append-to-body>
      <img :src="dialogImageUrl" style="display: block; max-width: 100%; margin: 0 auto" />
    </el-dialog>
  </div>
</template>

<script setup>
import { getToken } from "@/utils/auth";
import { upLoadFile, downLoadFile, deleteFile } from "@/api/system/attachFile";
import { nextTick } from "vue-demi";

const props = defineProps({
  modelValue: [String, Object, Array],
  // 图片数量限制
  limit: {
    type: Number,
    default: 5,
  },
  // 大小限制(MB)
  fileSize: {
    type: Number,
    default: 1024,
  },
  // 文件类型, 例如['png', 'jpg', 'jpeg']
  fileType: {
    type: Array,
    default: () => ["png", "jpg", "jpeg"],
  },
  // 是否显示提示
  isShowTip: {
    type: Boolean,
    default: true
  },
  disabled: {
    type: Boolean,
    default: false
  },
});

const { proxy } = getCurrentInstance();
const emit = defineEmits();
const number = ref(0);
const uploadList = ref([]);
const dialogImageUrl = ref("");
const dialogVisible = ref(false);
const baseUrl = import.meta.env.VITE_APP_BASE_API;
const uploadImgUrl = ref(import.meta.env.VITE_APP_BASE_API + "/attachment/uploadFile"); // 上传的图片服务器地址
const headers = ref({ token: "token " + getToken() });
const fileList = ref([]);
const uploadImg = ref([]);
const uploadRef1 = ref();
const showTip = computed(
  () => props.isShowTip && (props.fileType || props.fileSize)
);
const data = reactive({
  rules: {
    aiPictureTitle: [{ required: true, message: "标题不能为空", trigger: "blur" }],
  }
})
const { rules } = toRefs(data);

watch(() => props.modelValue, val => {
  if (val) {
    // 首先将值转为数组
    const list = Array.isArray(val) ? val : props.modelValue.split(",");
    // 然后将数组转为对象数组
    uploadImg.value = list.map(item => {
      // if (typeof item === "string") {
      //   if (item.indexOf(baseUrl) === -1) {
      //     item = { name: baseUrl + item, url: baseUrl + item };
      //   } else {
      //     item = { name: item, url: item };
      //   }
      // }
      item.aiPictureId = item.aiPictureId;
      item.aiPictureTitle = item.aiPictureTitle;
      item.aiPictureDescription = item.aiPictureDescription;
      item.url = import.meta.env.VITE_APP_BASE_API + "/attachment/downLoadFile?attachId=" + encodeURIComponent(item.aiPictureId)
      return item;
    });
    fileList.value =uploadImg.value;
  } else {
    fileList.value = [];
    return [];
  }
}, { deep: true, immediate: true });

// 删除图片
function handleRemove(file) {
  //emit("update:modelValue", listToString(fileList.value));\
  console.log(file,'2222');
  deleteFile(file.aiPictureId).then(res => {
    //console.log(res)
    if (res.code == 200) {
      proxy.$modal.msgSuccess("删除图片成功");
      fileList.value = fileList.value.filter(item => item.aiPictureId != file.aiPictureId);
      uploadImg.value = JSON.parse(JSON.stringify(fileList.value));
      console.log(fileList.value, '删除数据')
      console.log(uploadImg.value.length, '删除数据')
    } else {
      proxy.$modal.msgError("删除图片失败");
    }
  });
}

function handleChange(file, fileList) {
  fileList.value = fileList;
  uploadImg.value = fileList.value;
}

// 上传成功回调
// function handleUploadSuccess(res) {
//   uploadList.value.push({ attachId: res.data[0].attachId, name: res.data[0].attachName, url: import.meta.env.VITE_APP_BASE_API + "/attachment/downLoadFile?attachId=" + encodeURIComponent(res.data[0].attachId) });
//   //	console.log(uploadList.value.length)
//   //	console.log(fileList.value)
//   if (uploadList.value.length === number.value) {
//     fileList.value = fileList.value.filter(f => f.attachId !== undefined).concat(uploadList.value);
//     uploadList.value = [];
//     number.value = 0;
//     //emit("update:modelValue", listToString(fileList.value));
//     proxy.$modal.closeLoading();
//     proxy.$modal.msgSuccess("上传图片成功");
//     uploadImg.value = [];
//     fileList.value.forEach(item => {
//       uploadImg.value.push({aiPictureId:item.attachId,url:item.url,aiPictureTitle:'',aiPictureDescription:''}) 
//     });
//     //proxy.$refs.imagesUpload.clearValidate();
//   }
// }

function handleUploadSuccess(res) {
  uploadList.value.push({ aiPictureId: res.data[0].attachId, url: import.meta.env.VITE_APP_BASE_API + "/attachment/downLoadFile?attachId=" + encodeURIComponent(res.data[0].attachId), aiPictureTitle: '', aiPictureDescription: '' });
  if (uploadList.value.length === number.value) {
    nextTick(() => {
      fileList.value = fileList.value.filter(f => f.aiPictureId !== undefined).concat(uploadList.value);
      uploadList.value = [];
      number.value = 0;
      proxy.$modal.closeLoading();
      proxy.$modal.msgSuccess("上传图片成功");
      uploadImg.value = fileList.value;
    })
  }
}

// 上传前loading加载
function handleBeforeUpload(file) {
  let isImg = false;
  if (props.fileType.length) {
    let fileExtension = "";
    if (file.name.lastIndexOf(".") > -1) {
      fileExtension = file.name.slice(file.name.lastIndexOf(".") + 1);
    }
    isImg = props.fileType.some(type => {
      if (file.type.indexOf(type) > -1) return true;
      if (fileExtension && fileExtension.indexOf(type) > -1) return true;
      return false;
    });
  } else {
    isImg = file.type.indexOf("image") > -1;
  }
  if (!isImg) {
    proxy.$modal.msgError(
      `文件格式不正确, 请上传${props.fileType.join("/")}图片格式文件!`
    );
    return false;
  }
  if (props.fileSize) {
    const isLt = (file.size / 1024 / 1024 <= props.fileSize);
    if (!isLt) {
      proxy.$modal.msgError(`上传图片大小不能超过 ${props.fileSize} MB!`);
      return false;
    }
  }
  proxy.$modal.loading("正在上传图片，请稍候...");
  number.value++;
}

// 文件个数超出
function handleExceed() {
  proxy.$modal.msgError(`上传文件数量不能超过 ${props.limit} 个!`);
}

// 上传失败
function handleUploadError() {
  proxy.$modal.msgError("上传图片失败");
  proxy.$modal.closeLoading();
}

// 预览
function handlePictureCardPreview(file) {
  dialogImageUrl.value = file.url;
  dialogVisible.value = true;
}

// 对象转成指定字符串分隔
function listToString(list, separator) {
  let strs = "";
  separator = separator || ",";
  for (let i in list) {
    if (undefined !== list[i].url && list[i].url.indexOf("blob:") !== 0) {
      strs += list[i].url.replace(baseUrl, "") + separator;
    }
  }
  return strs != "" ? strs.substr(0, strs.length - 1) : "";
}
defineExpose({
  fileList,
  uploadRef1,
  uploadImg,
});
</script>

<style lang="scss" scoped>
.image {
  width: 148px;
  height: 148px;
  box-sizing: border-box;
}

.img {
  width: 148px;
  height: 148px;
  border-radius: 4px;
  border: 1px dashed #ccc;
  position: relative;
  z-index: 1;
}

.del-icon {
  width: 20px;
  height: 20px;
  border-radius: 10px;
  margin-right: 10px;
  color: red;
  position: absolute;
  left: 138px;
  top: -10px;
  z-index: 999;
  display: none;
  background: #fff;
}

.image:hover .del-icon {
  display: block;
}
</style>